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Finding the Fourth Proportional to 122.33, 181.99 and 121.93

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Solution

The fourth proportional to 122.33, 181.99 and 121.93 is: 181.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    122.33 : 181.99 = 121.93 : x
  2. Step 2: Convert to fraction form
    122.33/181.99 = 121.93/x
  3. Step 3: Cross multiply
    122.33x = 181.99 × 121.93
  4. Step 4: Simplify right side
    122.33x = 22,190.04
  5. Step 5: Solve for x
    x = 22,190.04/122.33
  6. Step 6: Final answer
    x = 181.39

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.